CN103502023A - Vulcanized tread, and tire - Google Patents
Vulcanized tread, and tire Download PDFInfo
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- CN103502023A CN103502023A CN201280020826.3A CN201280020826A CN103502023A CN 103502023 A CN103502023 A CN 103502023A CN 201280020826 A CN201280020826 A CN 201280020826A CN 103502023 A CN103502023 A CN 103502023A
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- 238000005987 sulfurization reaction Methods 0.000 claims description 36
- 238000000465 moulding Methods 0.000 abstract description 15
- 230000007423 decrease Effects 0.000 abstract 1
- 230000013011 mating Effects 0.000 description 21
- 210000003754 fetus Anatomy 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0083—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the curvature of the tyre tread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
- B29D30/56—Retreading with prevulcanised tread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/02—Replaceable treads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0327—Tread patterns characterised by special properties of the tread pattern
- B60C11/0332—Tread patterns characterised by special properties of the tread pattern by the footprint-ground contacting area of the tyre tread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
- B60C2011/0016—Physical properties or dimensions
- B60C2011/0033—Thickness of the tread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
- B60C2011/013—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered provided with a recessed portion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Tyre Moulding (AREA)
Abstract
Provided are a vulcanized tread and a tire configured so that the uneven wear of the tread of the tire is minimized, the tire being manufactured by separately molding a base tire which is to be the base of the tire and the vulcanized tread which is adhered to the base tire and then by integrating the base tire and the vulcanized tread. In order to obtain the vulcanized tread and the tire, the vulcanized tread is configured so that the vulcanized tread is provided with grooves which are arranged side-by-side in the transverse direction of the tread and which extend in the longitudinal direction of the tread and so that the thickness of the tread in a cross-section thereof taken in the transverse direction of the tread gradually decreases from the equator to the equator-side groove end of the outermost groove, which is located on the outermost side in the transverse direction and gradually increases from the outer groove end of the outermost groove in the transverse direction to the outer side in the transverse direction.
Description
Technical field
The present invention relates to vulcanize tyre surface, relate more specifically to suppress the sulfuration tyre surface of the partial wear of tire, this tire is by making to treat as tire with the base tire of base portion and treating that the sulfuration tyre surface of being combined with the base tire independently is shaped and makes the base tire combine and form with the sulfuration tyre surface, the invention still further relates on it and has the tire that vulcanizes tyre surface.
Background technology
In known a kind of tire manufacturing method, moulding, and then makes base tire and tyre surface combine to become finished tire with the base tire of base portion and as the sulfuration tyre surface of the base tire periphery to be bonded to of the tyre surface of tire as tire respectively.
The base tire will be for example by removing and obtain with the fetus face of the tire of crossing with sander machine.And the surface after removing fetus face is formed the mating surface of new tyre surface institute combination.Mating surface forms as follows: make the cutting part of mill contact with the fetus face with the tire of crossing being applied with under the state of interior pressure on the drum that is mounted to regularly sander machine.More specifically, under the state rotated at drum, make mill move forward and backward repeatedly on the Width of the tire with crossing.Therefore, mating surface is formed reservation shape, makes the radius of curvature in the axial cross section of mating surface diminish towards each side away from tire axial central authorities.Be formed with fixed thickness or be formed with away from axial central authorities and be incorporated on the base tire with reservation shape mating surface towards the sulfuration tyre surface of the thickness of each side attenuation.In this mode, make these two parts integrate each other finished tire.
The prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 9-70903 communique
Patent documentation 2: TOHKEMY 2001-180228 communique
Summary of the invention
the problem that invention will solve
Yet as mentioned above, the mating surface of base tire forms and makes radius of curvature diminish towards its each side away from axially central.So, if having the sulfuration tyre surface of fixed thickness or be incorporated in to the base tire from axial central authorities towards the sulfuration tyre surface of axially each side attenuation, vulcanizing tyre surface will be vertically with arc-shaped bend.As a result, the groove (major trough) extended along length (periphery) direction in the sulfuration tyre surface is stretched vertically, makes between the inner edge of each groove and outer rim and will have larger semidiameter.
Especially for the groove of the outermost locations that is positioned at the sulfuration tyre surface, semidiameter is larger than the semidiameter of the edge of other grooves.As a result, the length of supposing when ground contact length will become than tire design, and be more prone to occur partial wear in the tyre surface radial outside zone of finished tire while on the way using.In addition, in the forming process of the mating surface of base tire, at the width that makes bead part, launch to such an extent that than the rim width of the wheel that is equipped with tire, under wide state, the fetus face of the tire with crossing is polished.So, depending on the aspect ratio of the tire of using, the shape of the tread surface of the shape of the tread surface when finished tire that may exist is assembled to wheel during than polishing is crooked situation further.In such a case, the radius of the axial end portion side of tyre surface trends towards less than the radius of the middle body of tyre surface, and comparing of supposing during with tire design, and the ground contact length in the axial end portion side of tyre surface may become extremely short.The possibility of partial wear in the axial middle section of sulfuration tyre surface when therefore, this will increase finished tire and on the way use.
Make the present invention to address the above problem, and the purpose of this invention is to provide sulfuration tyre surface that a kind of partial wear of tire that can be bonded to vulcanizing tyre surface the mating surface of base tire suppressed and tire that on it, application has such sulfuration tyre surface.
for the scheme of dealing with problems
In order to address the above problem, the sulfuration tyre surface is constructed such that this sulfuration tyre surface has a plurality of grooves that extend along this cured tire face length degree direction on its Width.And, in the Width cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at the Width outermost locations and start outwards increase gradually of broad ways from the Width outer ledge of described outermost side channel.
According to this structure, have in the axial direction along in the axial cross section of the sulfuration tyre surface of a plurality of grooves of the circumferential extension of tyre surface, thickness starts from equator reduce gradually to the equator side edge of the outermost side channel that is positioned at axial outermost locations and start to increase gradually to the axial outside from the axial outer ledge of outermost side channel.So, the ground connection shape optimization of the tread surface of this finished tire when the finished tire that can make to have the sulfuration tyre surface on it contacts with road surface.
More specifically, in the axial cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at axial outermost locations.As a result, the cross sectional shape along tread surface of having applied the finished tire of sulfuration tyre surface will be level and smooth curve while being applied with suitable interior pressure in inside.In addition, the tread thickness in the axial cross section of tyre surface starts to increase gradually to the axial outside from the axial outer ledge of outermost side channel.As a result, can prevent also not contacting with road surface by the part in the axial outside than outermost side channel of tyre surface.Therefore, because the tread surface of finished tire can contact with road surface in well balanced mode, so can suppress the partial wear of tyre surface.
In addition, another sulfuration tyre surface is constructed such that this sulfuration tyre surface has a plurality of grooves that extend along this cured tire face length degree (periphery) direction on its width (axially) direction.In the Width cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at the Width outermost locations and starts broad ways from the Width outer ledge of described outermost side channel outwards to fix.
According to this structure, at tyre surface, have on axially along in the axial cross section of the sulfuration tyre surface of a plurality of grooves of the circumferential extension of tyre surface, tread thickness starts from equator reduce gradually to the equator side edge of the outermost side channel that is positioned at axial outermost locations and start outwards to fix vertically from the axial outer ledge of outermost side channel.So, the ground connection shape optimization of the tread surface of this finished tire when the finished tire that can make to have the sulfuration tyre surface on it contacts with road surface.
More specifically, in the axial cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at axial outermost locations.As a result, the cross sectional shape along tread surface of having applied the finished tire of sulfuration tyre surface will be level and smooth curve when inside is applied with suitable interior pressure.In addition, in axial cross section, tread thickness starts outwards to fix vertically from the axial outer ledge of outermost side channel.As a result, can prevent the axial outermost part and road surface excessive contact of tread surface.For example, when being applied with interior pressure, with the finished tire with the tyre surface that is applied to the base tire that aspect ratio is higher, compare, the finished tire with the tyre surface that is applied to the base tire that aspect ratio is lower demonstrates in the axially less change of the radius at outermost side channel place.So, in axial cross section, tread thickness starts outwards to fix vertically from the axial outer ledge of outermost side channel, this outer ledge that will prevent the outermost side channel is with the road surface excessive contact or do not contact.Therefore, because the tread surface of finished tire contacts with road surface in well balanced mode, so can suppress the partial wear of tyre surface.
In addition, another sulfuration tyre surface is formed in the Width cross section of described tyre surface, thinner than the section thickness of locating under the line at the tread thickness at Width outermost end place.
According to this structure, in the axial cross section of tyre surface, the tread thickness at the axial outermost place of tyre surface is thinner than the section thickness at place, equator.When result contacts with road surface when the finished product tire, locate under the line along tire, circumferential ground contact length will be the longest.So the tyre surface contacted with road surface of finished tire will have desirable ground connection shape.Namely, do not have tyre surface to scratch road surface, rolling resistance will be smaller and tyre surface in will partial wear can not occur.
In addition, another the sulfuration tyre surface be constructed such that in the Width cross section of described tyre surface, the tread thickness of the equator side edge of described outermost side channel is thicker than the tread thickness at the Width outer ledge place of described outermost side channel.
According to this structure, the tread thickness of the equator side edge of outermost side channel is thicker than the tread thickness at the axial outer ledge place of outermost side channel.This will provide the edge effect in the axial exterior lateral area of tyre surface, improve thus turning to property and stability.
In addition, another the sulfuration tyre surface be constructed such that in the Width cross section of described tyre surface, the tread thickness of the equator side edge of described outermost side channel equals the tread thickness at the Width outermost end place of described tyre surface.
According to this structure, the tread thickness of the equator side edge of outermost side channel equals the tread thickness at the axial outermost place of tyre surface.Therefore, can prevent the axial outermost excessive contact of sulfuration tyre surface when the finished product tire contacts with road surface.
In addition, another the sulfuration tyre surface be constructed such that in the Width cross section of described tyre surface, tread thickness starts from equator to reduce gradually with curve form to the equator side edge of the described outermost side channel that is positioned at the Width outermost locations.
According to this structure, can make the performance of being supposed while take tire design and not cause the tire that the low-rolling-resistance of partial wear is feature.
In addition, for solving foregoing problems, a kind of tire, it has sulfuration tyre surface as described as any one in claim 1 to 6.
According to this structure, the tread surface of finished tire can contact with road surface in well balanced mode, and therefore can suppress the partial wear of the tyre surface of tire.
The accompanying drawing explanation
Fig. 1 is block diagram and the exploded drawings of the tyre surface tire that is incorporated in to the base tire.
Fig. 2 be the stereoscopic figure of tyre surface and axially on section drawing.
Fig. 3 is the planar view of tyre surface.
Fig. 4 is the enlarged drawing in the cross section of tyre surface.
Fig. 5 is the section drawing of another shape of tyre surface.
Fig. 6 illustrates according to the tyre surface of sulfidization molding of the present invention and the chart of the contrast between traditional tyre surface.
Fig. 7 illustrates according to the tyre surface of another sulfidization molding of the present invention and the chart of the contrast between traditional tyre surface.
Below, will be based on exemplary illustration the present invention but not the preferred implementation that is intended to limit the scope of claim of the present invention is described the present invention.For purposes of the invention not necessarily, they comprise structure and the configuration selectively adopted for all features of describing in embodiment and combination thereof.
The specific embodiment
(a) of Fig. 1 is by will tyre surface 1 according to the present invention being bonded to the exploded perspective view of the finished tire that base tire 2 forms.To be tyre surface 1 be incorporated in to the section drawing of the finished tire of base tire 2 via binding layer 3 for intermediary to (b) of Fig. 1.Fig. 2 is the stereoscopic figure of tyre surface 1 and along the tread width direction section drawing of (axially).Fig. 3 is the planar view of tyre surface 1.
As shown in Fig. 1 (a) and Fig. 1 (b), tyre surface 1 according to the present invention is combined for intermediary via the binding layer 3 of the periphery that is formed on base tire 2.As shown in Figure 2, tyre surface 1 is the tyre surface of the sulfidization molding strip that is preliminary dimension.The cross sectional shape of the broad ways of tyre surface 1 is approximate trapezoid, and this approximate trapezoid has the noncontact face 1a side of the base tire 2 to be bonded to formed with form of straight lines and the contact surface 1b side contacted with road surface for the treatment of formed with wavy form.
Be formed with a plurality of major trough M1 of alongst extending and M2 and in the axial direction by adjacent major trough M1 with M2 is connected to each other or by major trough M1 and M1 axial groove N1 connected to one another, N2, N3 in the contact surface 1b of tyre surface 1 when tyre surface 1 is incorporated in to base tire 2.
Major trough M1 is positioned at the position of the equatorial plane of the more close axial centre as tyre surface, and major trough M2 is the outermost side channel that is positioned at the axial outside of major trough M1.Be formed with the wearing and tearing designator (seeing JIS D 4230) of the wear limit that for example means tyre surface 1 at the bottom land of major trough M1 and M2.
Axial groove N1, N2, the N3 that for example has a same depth with major trough M1 and M2 forms with rule or fitfull spacing along the length direction of tyre surface.The contact surface 1b of the tyre surface 1 in present embodiment is separated into pattern block by a plurality of major trough M1 and M2 and a plurality of axial groove N1, N2, N3.
As shown in Figures 2 and 3, in the contact surface 1b of the side that will contact with road surface as tyre surface, circumferentially the forming with rule or fitfull spacing along tyre surface by major trough M1, M1 axial groove N1 connected to one another.As a result, formed the center running lug 5 limited by axial groove N1, N1 in the axial middle section of tyre surface 1.In addition, in contact surface 1b, circumferentially the forming with rule or fitfull spacing along tyre surface by major trough M1 and major trough M2 axial groove N2 connected to one another.As a result, formed in the axial outside of center running lug 5 the sidepiece pattern block 6 limited by axial groove N2, N2.
In addition, in contact surface 1b, by major trough M2 be called side surface S below tyre surface side surface S() the axial groove N3 that is connected circumferentially forms with rule or fitfull spacing along tyre surface.As a result, formed in the axial outside of sidepiece pattern block 6 pattern block on tire shoulder 7 limited by axial groove N3, N3.
In the present embodiment, for easy, below the equator P1(of usining with respect to the tread width center as shown in Fig. 3 and Fig. 4, being called axial centre P1) symmetrical mode illustrates tread contour.Yet actual tread contour is not limited to this explanation of embodiment.
Fig. 4 is the enlarged drawing along the axial cross section of the tyre surface 1 of the line A-A intercepting of Fig. 3.Hereinafter, with reference to Fig. 3 and Fig. 4 provided tyre surface 1 with tread block 5,6 and 7 axially on the explanation of thickness.
As shown in Figure 3 and Figure 4, center running lug 5 is positioned at the axial middle section of tyre surface 1, the axial centre P1 on riding axially.
The thickness H2 from noncontact face 1a to contact surface 1b at the axial centre P1 lateral edges P2 place of the major trough M1 that defines center running lug 5 and sidepiece pattern block 6 is set to thinner than the thickness H1 from noncontact face 1a to contact surface 1b in tyre surface center P 1.Edge P2 is the equator side edge at the major trough M1 of contact surface 1b upper shed.
In addition, the thickness H3 from noncontact face 1a to contact surface 1b at the axial outer ledge P3 place of major trough M1 is formed thinner than the thickness H2 at above-mentioned edge P2.Edge P3 is the outer ledge at the major trough M1 of contact surface 1b upper shed.
The thickness H4 from noncontact face 1a to contact surface 1b at the axial centre P1 lateral edges P4 place of the major trough M2 that defines sidepiece pattern block 6 and pattern block on tire shoulder 7 is formed thinner than the thickness H3 at above-mentioned edge P3.Edge P4 is the equator side edge at the major trough M2 of contact surface 1b upper shed.
In other words, according to the tyre surface 1 of present embodiment, be formed and make: in axial cross section, the thickest at the thickness H1 at axial centre P1 place, and thickness is according to the order attenuation gradually of edge P2, P3 and P4.More specifically, the axial centre P1 lateral edges P4 from axial centre P1 to the major trough M2 that is positioned at outermost locations, the section thickness of tyre surface 1 is formed vertically and reduces gradually.
Therefore, the thickness of tyre surface 1 is formed from axial centre P1 and reduces gradually to edge P4.As a result, when tyre surface 1 by the width of the mating surface of the bending along base tire 2 with curve in conjunction with the time, connecting edge P2, the P3 of tread block 4 and the imaginary line of P4 will be the dull sweep descended from axial centre P1 to edge P4.More specifically, for the tyre surface 1 that is incorporated in to mating surface, owing to the axis curvature of mating surface, P2He edge, the edge P3 of major trough M1 produces in the axial direction displacement under the state moved away from each other.And, because the thickness of tyre surface 1 is progressive and reduce smoothly from P2Dao edge, edge P3, so the surface from axial centre P1 to P3 is level and smooth, and P2He edge, edge P3 is not outstanding.And, utilization is from the axial centre P1 of center running lug 5 to edge P2 with from the thickness that P3Dao edge, the edge P4 of sidepiece pattern block reduces gradually, and the tread surface that has the finished tire of tyre surface 1 on it will take to make tread surface from axial centre P1 to edge P4 smoothly and the form little by little descended.
It should be noted, the cross sectional shape line that axial centre P1 is connected with P4 with edge P2, P3 is preferably for example smooth curve of approximate polishing line.But the shape of line can be the line that makes line extend with step or linear fashion in each pattern block.In addition, the rate of descent of thickness also can at random be set.
Then, provide the axially explanation of the section thickness in the outside of tyre surface of edge P4.
The thickness H5 from noncontact face 1a to contact surface 1b at the P5 place, edge in the axial outside of major trough M2 is formed for example thinner than the thickness H4 at above-mentioned edge P4.Edge P5 is the axial outer ledge at the major trough M2 of contact surface 1b upper shed.The thickness H6 from noncontact face 1a to contact surface 1b at the P6 place, edge of the contact surface 1b side of the tyre surface side surface S of tyre surface 1 is formed thicker than the thickness H5 at edge P5.Edge P6 is the axial outermost edges of the contact surface 1b of contact surface 1b and tyre surface side surface S junction part.Namely, edge P6 is the axial outermost edges of the ground area of tyre surface 1.
More specifically, thickness H5 at the P5 place, edge in the axial outside of major trough M2 is formed thinner than the thickness H4 at P4 place, edge, and section thickness increases to axial outermost edges P6 gradually from edge P5, make the thickness H6 at P6 place, edge equal the thickness H4 at P4 place, edge.
In other words, section thickness is so that the mode identical with thickness H4 at P4 place, edge starts to increase gradually from edge P5 at the thickness H6 at P6 place, edge.In addition, the line in cross sectional shape, P5Yu edge, edge P6 connected is set to for example straight line.
As mentioned above, the thickness H5 at the outer ledge P5 place of major trough M2 is formed thinner than the thickness at P4 place, edge.As a result, when tyre surface 1 by the curvature along mating surface in conjunction with the time, form the surface from axial centre P1 to edge P5 with level and smooth curve, and P4He edge, the edge P5 of major trough M2 is not outstanding.
In addition, tyre surface 1 is formed and makes thickness increase gradually to the edge P6 as its axial outermost edges from the outer ledge P5 of the major trough M2 that is positioned at axial outermost locations.As a result, during in conjunction with tyre surface 1, tyre surface 1 can be bonded to mating surface from P5Dao edge, edge P6 with best curve when the curve of the shoulder zone along base tire 2 (its curvature marked change).Namely, can reduce from the increasing gradually on thickness of P5Dao edge, edge P6 the semidiameter between P5Yu edge, edge P6 that may be easy to occur at finished tire that the marked change due to the curvature of the mating surface in the shoulder zone of base tire 2 causes.In addition, when tyre surface 1 is incorporated in to mating surface, the thickness H6 at P6 place, edge that is formed the thickness H4 equaled at P4 place, edge will guarantee to form from edge P4 the surface via P5Dao edge, edge P6 with smooth curve.This will prevent when the finished tire with tyre surface 1 contacts with road surface the excessive contact as the edge P6 of the axial outermost edges of the contact surface 1b of sulfuration tyre surface.
Fig. 5 is the section drawing that another shape of tyre surface 1 is shown.In aforementioned embodiments, the section thickness of tyre surface 1 is formed from P5Dao edge, edge P6 to be increased gradually.Yet the difference of present embodiment is: section thickness is fixed from P5Dao edge, edge P6.
As shown in Figure 5, the tyre surface 1 in this embodiment is formed with following section thickness on axially.The thickness H1 at axial centre P1 place is the thickest, and then thickness is formed the attenuation gradually from P2Dao edge, edge P3Dao edge P4.And the thickness H5 at P5 place, edge is formed thinner than the thickness H4 at P4 place, edge, and the edge P6 that thickness H6 is formed from edge P5 to the axial outermost edges of conduct fixes.Namely, the mode with straight line forms the cross sectional shape from P5 to P6.
According to present embodiment, the thickness of P5Dao edge, the edge P6 of the tyre surface side surface S lateral edges from the major trough M2 as being positioned at axial outermost locations of tyre surface 1 is formed fixing.As a result, when when thering is the base tire 2 of low aspect ratio, can with optimum curve, tyre surface 1 be bonded to mating surface from P5Dao edge, edge P6 along the curve of the shoulder zone (its curvature marked change) of base tire 2.In other words, when being applied with interior pressure, with the base tire 2 with higher aspect ratio, compare, on the curvature of the mating surface of the base tire 2 with low aspect ratio in the shoulder zone as axial outermost locations, demonstrate less variation.So, when when tyre surface 1 being applied to the base tire 2 with low aspect ratio and manufacturing finished tire, make will produce from the smooth curve of P5Dao edge, edge P6 from the thickness of P5Dao edge, edge P6 is fixing.This will prevent when the finished product tire contacts with road surface the excessive contact as the edge P6 of the axial outermost edges of tyre surface 1.Therefore, the tire that is combined with the tyre surface 1 of this embodiment contacts with road surface in the unusual mode of balance due to its contact surface 1b and can suppress the partial wear of tyre surface 1.
Although not shown, vulcanizer is equipped with the contact surface side mould of the contact surface 1b side moulding for making tyre surface 1 and for making the noncontact face side mold of its noncontact face 1a side moulding.Machine can receive the tire tread material that forms in advance bar (band) shape in the molding space limited by two moulds and under set pressure and be heated.
The surface of contact surface side mould is formed with the decorative pattern as the convex-concave section of the anti-line of the tread contour on tyre surface 1.Therefore, during against the surface-pressure of contact surface side mould, can produce the tyre surface 1 with expectation tread contour when the surface of tire tread material.On the other hand, the surface of noncontact face side mold is formed flat surfaces.So the surface facing to flat surfaces of tire tread material will be formed the noncontact surface of tyre surface 1.
Hereinafter, will there is the tyre surface 1 of section thickness as mentioned above and be bonded to the general introduction of manufacturing process of the finished tire of base tire 2 by providing.For example can be by with unshowned sander machine, removing to obtain the base tire 2 shown in Fig. 1 with the fetus face of the tire of crossing.Although not shown, but sander machine is equipped with rousing of can being kept the tire with crossing that is applied with interior pressure and is positioned at the position relative with drum and has the mill of cutting part, wherein cutting part can be cut the fetus face of the tire by mistake of the state in being rotated by drum.The drum of the cylinder that a plurality of bulging part of installing as the mode by with can enlargement and contraction forms can keep the tires of using of different sizes regularly.In addition, drum has the flange to separate to set a distance in the axial direction along periphery.The flange corresponding with the rim flange of wheel closely is fixed thereon pair of bead section when interior pressure is applied in the tire crossed.
Mill by with can near or away from by drum, kept with the tire of crossing mobile and can along by drum, kept with tire and axially movable mode is installed.And make the fetus face of mill near the tire of using rotated, and by the cutting part contact fetus face the mobile in the axial direction fetus face of little by little removing that make mill.In this mode, can produce the there is reservation shape base tire 2 of mating surface of (polishing line).
Periphery along the base tire 2 formed by said process is placed in mating surface in connection with layer 3.For example, by using extrusion shaping machine that glue material is extruded into to uniform thickness and will be formed on mating surface as the binding layer 3 of the uncured rubber that is known as cushion compound.
Now round the mating surface of the base tire 2 that is equipped with binding layer on it along the above-mentioned tyre surface 1 of circumferentially reeling.
Namely, for intermediary, temporary transient and base tire 2 forms as one via binding layer 3 to make tyre surface 1.Then, the tyre surface 1 and the base tire 2 that temporarily are integrated each other are placed in the sealing bag that is known as envelope (envelope).
Envelope has valve, and inner air can be discharged from by this valve.After being placed in envelope by tyre surface 1 and base tire 2, by valve, inner air is discharged, in order to make the Surface Contact of envelope and tyre surface 1 and base tire 2.Then tyre surface 1 and the base tire 2 of encapsulated cover compression are transported in the vulcanization unit that is known as vulcanizing tank.In vulcanization unit, along with sulfuration progress specified time at set pressure and temperature, as the cushion compound of the binding layer between tyre surface 1 and base tire 2 by tyre surface 1 with together with base tire 2 is firmly bonded to.In this mode, complete the manufacture of finished tire.
Fig. 6 (a) illustrates the cross sectional shape according to sulfidization molding tyre surface of the present invention.(b) of Fig. 6 illustrates the cross sectional shape of the plate traditional tyre surface 10 with constant cross-section thickness.(c) of Fig. 6 illustrates the ground connection shape of the finished tire of the tyre surface 1 of applying with good grounds this invention.(d) of Fig. 6 illustrates the ground connection shape that application has the tire of traditional tyre surface 10.(e) of Fig. 6 is the form that the difference on the length of ground connection shape of (d) of Fig. 6 (c) and Fig. 6 is shown.It should be noted, in form, recently mean as the percentage of benchmark (100) at the circumferential ground contact length L1 along tire at tyre surface center P 1 place by usining respectively at the ground contact length L4 to L6 at edge P4 to P6 place.
In embodiment 1, polish to prepare base tire 2 by the tire with crossing to 275/80R22.5, and by tyre surface 1 of the present invention is applied on a base tire 2 and by the tyre surface of sulfidization molding 10 and is applied on another base tire 2 and manufactures as a comparative example the test finished tire, with this comparing property test.
As shown in Fig. 6 (a), tyre surface 1 α (1) in embodiment 1 is formed and makes its width in noncontact face 1a side is 250mm.Its thickness H1 at axial centre P1 place is 18.8mm, and the thickness H4 at P4 place, edge is 18.3mm, and the thickness H5 at P5 place, edge is 17.8mm, and the thickness H6 at P6 place, edge is 18.3mm.Section thickness from axial centre P1 to edge P4 reduces gradually with curve.Section thickness at P5 place, edge is set to thinner than the section thickness at P4 place, edge.Section thickness at P6 place, edge is set equal to the section thickness at P4 place, edge.And increase gradually with linear fashion from the section thickness of P5Dao edge, edge P6.
As shown in Fig. 6 (b), tyre surface 10 α (10) as a comparative example are formed its thickness and are fixed on the tabular of 18.8mm from axial centre P1 to edge P6.
Hereinafter, the tire that provides to be combined with tyre surface 1 α is as finished tire A and using and be combined with the explanation of the tire of tyre surface 10 α as finished tire B.
As shown in Fig. 6 (c), Fig. 6 (d) and Fig. 6 (e), the target shape (ground contact length) of supposing when obviously finished tire A meets tire design.Namely, by tyre surface 1 α is shaped to, make the axial centre P1 lateral edges P4 of section thickness from axial centre P1 to the major trough M2 that is positioned at axial outermost locations of tyre surface 1 α reduce gradually and the axial side end from the outer ledge P5 of major trough M2 to tyre surface increases gradually, can produce the finished tire A with expectation ground connection shape.And, because especially change in the axial exterior lateral area of maximum major trough M2 at diameter when being applied with interior pressure, contact surface 1b forms with intended shape, so do not observe partial wear on finished tire A.Therefore, application has the finished tire A of tyre surface 1 α of the present invention to be the performance of being planned while take tire design and to there is no the tire that the low-rolling-resistance of partial wear is feature.
The long ground contact length of target length of supposing when on the other hand, finished tire B trends towards having usually than tire design.Especially, longer than the ground contact length L1 at axial centre P1 place at the ground contact length L5 at P5 place, edge.Namely, because edge P5 is pushing against road surface partially with strength, partly locate to have partial wear so be combined with the finished tire B result of tyre surface 10 α at edge P5, thereby do not there are balanced wearing and tearing on whole tire protector.The partial wear of the type may be the factor that increases rolling resistance, unstable when this will cause trailer reversing.
(a) of Fig. 7 illustrates the cross sectional shape according to the tyre surface 1 of sulfidization molding of the present invention.(b) of Fig. 7 illustrates the cross sectional shape of the plate traditional tyre surface 10 with constant cross-section thickness.(c) of Fig. 7 illustrates the ground connection shape of the finished tire of the tyre surface 1 of applying with good grounds this invention.(d) of Fig. 7 illustrates the ground connection shape of applying the tire that traditional tyre surface 10 is arranged on it.(e) of Fig. 7 is the form that the difference on the length of ground connection shape of (d) of Fig. 7 (c) and Fig. 7 is shown.It should be noted, in form, recently mean as the percentage of benchmark (100) at the L1 of the ground contact length along the tire periphery at tyre surface center P place by usining respectively at the ground contact length L4 to L6 at edge P4 to P6 place.
In embodiment 2, the tire with crossing of 11R22.5 by the tire size to being different from embodiment 1 polishes to prepare base tire 2, and by tyre surface 1 of the present invention is applied on a base tire 2 and by the tyre surface of sulfidization molding 10 and is applied on another base tire 2 and manufactures as a comparative example the test finished tire, with this comparing property test.
As shown in Fig. 7 (a), tyre surface 1 β (1) in embodiment 2 is formed and makes its width in noncontact face 1a side is 230mm.Its thickness H1 at tyre surface center P 1 place is 18.8mm, and the thickness H4 at P4 place, edge is 18.3mm, and the thickness H5 at P5 place, edge is 17.8mm, and the thickness H6 at P6 place, edge is 17.8mm.Section thickness from axial centre P1 to edge P4 reduces gradually with curve.Section thickness at P5 place, edge is set to thin than at P4 place, edge.Section thickness at P6 place, edge is set equal to the section thickness at P4 place, edge.And be formed fixing from the section thickness of P5Dao edge, edge P6.
As shown in Fig. 7 (b), tyre surface 10 β (10) as a comparative example are formed its thickness and are fixed on the writing board shape of 18.8mm from axial centre P1 to edge P6.
Hereinafter, provide to using be combined with tyre surface 1 β tire as finished tire A with using and be combined with the explanation of the tire of tyre surface 10 β as finished tire B.
As shown in Fig. 7 (c), Fig. 7 (d) and Fig. 7 (e), the target shape (ground contact length) of supposing when obviously finished tire A meets tire design.Namely, by tyre surface 1 β is shaped to, make the axial centre P1 lateral edges P4 of section thickness from axial centre P1 to the major trough M2 that is positioned at axial outermost locations of tyre surface 1 β reduce gradually and from the outer ledge P5 of major trough M2 to the edge P6 as axial outermost edges for fixing, can produce the finished tire A with expectation ground connection shape.Especially, the finished tire A of this example compares and has high aspect ratio with the finished tire A of embodiment 1.So, stand to have taked in the axial exterior lateral area of the major trough M2 that the maximum tire diameter changes the shape of expectation due to contact surface 1b when having applied interior press, therefore be formed the finished tire A that there is this embodiment of fixed thickness to axial side from the outer ledge P5 of major trough M2 and do not demonstrate partial wear.So application has the finished tire A of tyre surface 1 β of the present invention to be the performance of being planned while take tire design and to there is no the tire that the low-rolling-resistance of partial wear is feature.
On the other hand, the ground contact length that the target length that the finished tire B that has an aspect ratio higher than the aspect ratio of the finished tire B of embodiment 1 supposes while trending towards having than tire design in the axial exterior lateral area of tyre surface 10 β is long.Especially, more much longer than target length at the ground contact length L6 at P6 place, edge.Namely, because pattern block on tire shoulder 7 is being pushed against road surface with strength, especially at P6 place, edge, there is partial wear so be combined with the finished tire B result of tyre surface 10 β, thereby do not there are balanced wearing and tearing on whole tire protector.The partial wear of the type may be the factor that increases rolling resistance, unstable when this will cause trailer reversing.
As previously mentioned, by employing, make the axial centre P1 lateral edges P4 of section thickness from axial centre P1 to the major trough M2 that is positioned at axial outermost locations of tyre surface 1 β reduce gradually and make section thickness increase gradually or fix tyre surface 1 β of (determining according to the aspect ratio of tire) to the edge P6 as axial outermost edges from the outer ledge P5 of major trough M2, can prevent the partial wear of the tyre surface 1 on finished tire.Namely, when the aspect ratio of base tire is low, from the outer ledge P5 of major trough M2 to increasing gradually as the axial thickness H6 of the edge P6 of outermost edges.And when the aspect ratio of base tire is low, from the outer ledge P5 of major trough M2 to fixing as the axial thickness H6 of the edge P6 of outermost edges.In this mode, can prevent the partial wear of tyre surface 1 β.
In addition, the thickness H5 at P5 place, edge can be appropriately set at and equals or be thicker than the thickness H4 at P4 place, edge.This will provide in axial exterior lateral area or the edge effect in the tire shoulder regions, thereby improve turning efficiency and the stability of vehicle.
In aforementioned embodiments, in the mode that is formed bar (band) shape, tyre surface 1 has been described.Yet tyre surface 1 is not limited to strip, and can be annular annular tire tread by prior sulfidization molding.
In addition, in aforementioned embodiments, with by will the base tire being described by the old fetus face of mill of the tire of the crossing mode that forms the base tire of being polished.The base tire of the newborn output that but the base tire can be sulfidization molding also then to be formed by its crown part polishes.
In the above description, with reference to specific embodiment, the present invention has been described.Yet technical scope of the present invention is not limited to the described scope of above-mentioned embodiment.It will be apparent to one skilled in the art that and can carry out various variants and modifications to the present invention in the situation that do not deviate from the spirit and scope of the present invention.From claims, also it is evident that, all these modification should be included in technical scope of the present invention.
description of reference numerals
Claims (7)
1. one kind is vulcanized tyre surface, and it has a plurality of grooves that extend along the tyre surface length direction on the tread width direction,
Wherein, in the Width cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at the Width outermost locations and start outwards increase gradually of broad ways from the Width outer ledge of described outermost side channel.
2. one kind is vulcanized tyre surface, and it has a plurality of grooves that extend along the tyre surface length direction on the tread width direction,
Wherein, in the Width cross section of tyre surface, tread thickness starts from equator to reduce gradually to the equator side edge of the outermost side channel that is positioned at the Width outermost locations and starts broad ways from the Width outer ledge of described outermost side channel outwards to fix.
3. sulfuration tyre surface according to claim 1 and 2, is characterized in that, in the Width cross section of described tyre surface, thinner than the section thickness of locating under the line at the tread thickness at Width outermost end place.
4. according to the described sulfuration tyre surface of any one in claims 1 to 3, it is characterized in that, in the Width cross section of described tyre surface, the tread thickness of the equator side edge of described outermost side channel is thicker than the tread thickness at the Width outer ledge place of described outermost side channel.
5. according to the described sulfuration tyre surface of any one in claims 1 to 3, it is characterized in that, in the Width cross section of described tyre surface, the tread thickness of the equator side edge of described outermost side channel equals the tread thickness at the Width outermost end place of described tyre surface.
6. according to the described sulfuration tyre surface of any one in claim 1 to 5, it is characterized in that, in the Width cross section of described tyre surface, tread thickness starts from equator to reduce gradually with curve form to the equator side edge of the described outermost side channel that is positioned at the Width outermost locations.
7. a tire, it has sulfuration tyre surface as described as any one in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194482.3A CN104802603B (en) | 2011-07-15 | 2012-07-11 | Cured tread and tire |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011157094A JP5214776B2 (en) | 2011-07-15 | 2011-07-15 | Vulcanized tread |
| JP2011-157094 | 2011-07-15 | ||
| PCT/JP2012/067675 WO2013011888A1 (en) | 2011-07-15 | 2012-07-11 | Vulcanized tread, and tire |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194482.3A Division CN104802603B (en) | 2011-07-15 | 2012-07-11 | Cured tread and tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103502023A true CN103502023A (en) | 2014-01-08 |
| CN103502023B CN103502023B (en) | 2015-09-16 |
Family
ID=47558066
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194482.3A Expired - Fee Related CN104802603B (en) | 2011-07-15 | 2012-07-11 | Cured tread and tire |
| CN201280020826.3A Expired - Fee Related CN103502023B (en) | 2011-07-15 | 2012-07-11 | Sulfuration tyre surface and tire |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194482.3A Expired - Fee Related CN104802603B (en) | 2011-07-15 | 2012-07-11 | Cured tread and tire |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US9994076B2 (en) |
| EP (1) | EP2692545B1 (en) |
| JP (1) | JP5214776B2 (en) |
| CN (2) | CN104802603B (en) |
| BR (1) | BR112013024704B8 (en) |
| RU (1) | RU2539441C1 (en) |
| WO (1) | WO2013011888A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7035479B2 (en) * | 2017-11-21 | 2022-03-15 | 横浜ゴム株式会社 | Pneumatic tires |
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|---|---|---|---|---|
| JP2001039118A (en) * | 1999-07-27 | 2001-02-13 | Bridgestone Corp | Pneumatic tire |
| JP2001180228A (en) * | 1999-12-28 | 2001-07-03 | Bridgestone Corp | Precured tread for retreaded tire and method of manufacturing the same |
| JP2002192912A (en) * | 2000-12-26 | 2002-07-10 | Bridgestone Corp | Precure tread and regenerated tire with precure tread |
| JP2005112010A (en) * | 2003-10-02 | 2005-04-28 | Sumitomo Rubber Ind Ltd | Precure tread rubber body, and retreaded tire using the same |
| CN1668484A (en) * | 2002-09-10 | 2005-09-14 | 横滨橡胶株式会社 | Pneumatic tire |
| EP2143572A1 (en) * | 2008-07-09 | 2010-01-13 | Continental Reifen Deutschland GmbH | Pneumatic tyres for a vehicle |
| JP4641554B2 (en) * | 2008-08-11 | 2011-03-02 | 株式会社ブリヂストン | Pneumatic tire |
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| US2094636A (en) * | 1934-11-24 | 1937-10-05 | Us Rubber Co | Tire |
| US3753821A (en) * | 1971-02-01 | 1973-08-21 | Brad Ragan Inc | Method of retreading pneumatic tires without a mold |
| JP2784597B2 (en) * | 1989-10-05 | 1998-08-06 | 株式会社ブリヂストン | Flat pneumatic radial tire |
| DK0492048T3 (en) * | 1990-12-27 | 1995-11-06 | Bandag Licensing Corp | Vaulted tread |
| JPH0516608A (en) | 1991-02-12 | 1993-01-26 | Yokohama Rubber Co Ltd:The | Pneumatic bias tire |
| JPH0970903A (en) | 1995-06-26 | 1997-03-18 | Yokohama Rubber Co Ltd:The | Precure tread for regenerated tire and manufacture thereof |
| CA2294418A1 (en) * | 1997-06-20 | 1998-12-30 | Robert Ciprian Radulescu | Pneumatic tire including belt and circumferential ribs |
| JP4043569B2 (en) * | 1997-11-25 | 2008-02-06 | 株式会社ブリヂストン | Pneumatic tire |
| JP4303343B2 (en) * | 1999-01-29 | 2009-07-29 | 株式会社ブリヂストン | Pneumatic tire |
| BR0001130B1 (en) * | 2000-04-05 | 2014-01-28 | Tire Retreading Tread | |
| JP4872066B2 (en) * | 2007-04-05 | 2012-02-08 | 東洋ゴム工業株式会社 | Pneumatic tire |
-
2011
- 2011-07-15 JP JP2011157094A patent/JP5214776B2/en not_active Expired - Fee Related
-
2012
- 2012-07-11 CN CN201510194482.3A patent/CN104802603B/en not_active Expired - Fee Related
- 2012-07-11 RU RU2013156337/11A patent/RU2539441C1/en active
- 2012-07-11 BR BR112013024704A patent/BR112013024704B8/en not_active IP Right Cessation
- 2012-07-11 WO PCT/JP2012/067675 patent/WO2013011888A1/en active Application Filing
- 2012-07-11 US US14/113,281 patent/US9994076B2/en active Active
- 2012-07-11 EP EP12814666.9A patent/EP2692545B1/en not_active Not-in-force
- 2012-07-11 CN CN201280020826.3A patent/CN103502023B/en not_active Expired - Fee Related
-
2015
- 2015-05-13 US US14/711,424 patent/US10076934B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001039118A (en) * | 1999-07-27 | 2001-02-13 | Bridgestone Corp | Pneumatic tire |
| JP2001180228A (en) * | 1999-12-28 | 2001-07-03 | Bridgestone Corp | Precured tread for retreaded tire and method of manufacturing the same |
| JP2002192912A (en) * | 2000-12-26 | 2002-07-10 | Bridgestone Corp | Precure tread and regenerated tire with precure tread |
| CN1668484A (en) * | 2002-09-10 | 2005-09-14 | 横滨橡胶株式会社 | Pneumatic tire |
| JP2005112010A (en) * | 2003-10-02 | 2005-04-28 | Sumitomo Rubber Ind Ltd | Precure tread rubber body, and retreaded tire using the same |
| EP2143572A1 (en) * | 2008-07-09 | 2010-01-13 | Continental Reifen Deutschland GmbH | Pneumatic tyres for a vehicle |
| JP4641554B2 (en) * | 2008-08-11 | 2011-03-02 | 株式会社ブリヂストン | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| US10076934B2 (en) | 2018-09-18 |
| EP2692545A1 (en) | 2014-02-05 |
| WO2013011888A1 (en) | 2013-01-24 |
| EP2692545B1 (en) | 2016-01-06 |
| CN104802603B (en) | 2017-04-12 |
| CN103502023B (en) | 2015-09-16 |
| JP5214776B2 (en) | 2013-06-19 |
| US20150283860A1 (en) | 2015-10-08 |
| BR112013024704B8 (en) | 2021-10-13 |
| JP2013022983A (en) | 2013-02-04 |
| BR112013024704B1 (en) | 2021-07-20 |
| EP2692545A4 (en) | 2014-10-22 |
| CN104802603A (en) | 2015-07-29 |
| US20140041775A1 (en) | 2014-02-13 |
| RU2539441C1 (en) | 2015-01-20 |
| US9994076B2 (en) | 2018-06-12 |
| BR112013024704A2 (en) | 2016-12-20 |
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